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111 lines
2.6 KiB
Go
111 lines
2.6 KiB
Go
package swift
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import (
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"os"
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"strings"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/options"
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)
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// Config contains basic configuration needed to specify swift location for a swift server
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type Config struct {
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UserName string
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Domain string
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APIKey string
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AuthURL string
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Region string
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Tenant string
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TenantID string
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TenantDomain string
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TrustID string
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StorageURL string
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AuthToken string
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Container string
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Prefix string
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DefaultContainerPolicy string
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Connections uint `option:"connections" help:"set a limit for the number of concurrent connections (default: 5)"`
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}
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func init() {
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options.Register("swift", Config{})
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}
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// NewConfig returns a new config with the default values filled in.
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func NewConfig() Config {
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return Config{
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Connections: 5,
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}
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}
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// ParseConfig parses the string s and extract swift's container name and prefix.
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func ParseConfig(s string) (interface{}, error) {
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data := strings.SplitN(s, ":", 3)
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if len(data) != 3 {
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return nil, errors.New("invalid URL, expected: swift:container-name:/[prefix]")
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}
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scheme, container, prefix := data[0], data[1], data[2]
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if scheme != "swift" {
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return nil, errors.Errorf("unexpected prefix: %s", data[0])
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}
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if len(prefix) == 0 {
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return nil, errors.Errorf("prefix is empty")
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}
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if prefix[0] != '/' {
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return nil, errors.Errorf("prefix does not start with slash (/)")
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}
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prefix = prefix[1:]
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cfg := NewConfig()
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cfg.Container = container
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cfg.Prefix = prefix
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return cfg, nil
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}
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// ApplyEnvironment saves values from the environment to the config.
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func ApplyEnvironment(prefix string, cfg interface{}) error {
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c := cfg.(*Config)
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for _, val := range []struct {
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s *string
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env string
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}{
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// v2/v3 specific
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{&c.UserName, prefix + "OS_USERNAME"},
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{&c.APIKey, prefix + "OS_PASSWORD"},
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{&c.Region, prefix + "OS_REGION_NAME"},
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{&c.AuthURL, prefix + "OS_AUTH_URL"},
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// v3 specific
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{&c.Domain, prefix + "OS_USER_DOMAIN_NAME"},
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{&c.Tenant, prefix + "OS_PROJECT_NAME"},
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{&c.TenantDomain, prefix + "OS_PROJECT_DOMAIN_NAME"},
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// v2 specific
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{&c.TenantID, prefix + "OS_TENANT_ID"},
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{&c.Tenant, prefix + "OS_TENANT_NAME"},
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// v1 specific
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{&c.AuthURL, prefix + "ST_AUTH"},
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{&c.UserName, prefix + "ST_USER"},
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{&c.APIKey, prefix + "ST_KEY"},
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// Manual authentication
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{&c.StorageURL, prefix + "OS_STORAGE_URL"},
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{&c.AuthToken, prefix + "OS_AUTH_TOKEN"},
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{&c.DefaultContainerPolicy, prefix + "SWIFT_DEFAULT_CONTAINER_POLICY"},
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} {
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if *val.s == "" {
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*val.s = os.Getenv(val.env)
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}
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}
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return nil
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}
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